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Cheesy Breakfast Casserole
4.9 from 69 votes

Cheesy Breakfast Casserole

This Cheesy Breakfast Casserole layers diced russet potatoes, Italian sausage, and bell peppers bound by an egg and milk mixture, then topped with sharp cheddar cheese. The result is a savory, hearty baked dish with tender potatoes, flavorful sausage, and melted cheese, ideal for a filling breakfast or brunch.

Prep Time
15 mins
Cook Time
50 mins
Total Time
1 hr 5 mins
Servings: 8 servings
Course: Breakfast

Ingredients

  • 2 russet potatoes diced, small
  • 4 egg large
  • ¼ cup milk
  • 1 teaspoon hot sauce optional
  • salt to taste, Kosher salt and freshly ground
  • black pepper to taste, Kosher salt and freshly ground
  • 1 tablespoon olive oil
  • 3 Italian sausage links casing removed
  • 1 red bell pepper diced
  • 1 green bell pepper diced
  • 1 cup cheddar cheese divided, shredded sharp
  • 2 tablespoons parsley chopped fresh leaves

Instructions

    Cup of Yum
  1. Preheat oven to 350 degrees F. Lightly coat a 9-inch baking dish with nonstick spray.
  2. Place potatoes and 1/4 cup water in a microwave-safe bowl. Cover and place into microwave for 4-5 minutes, or until tender; drain well and set aside.
  3. In a large glass measuring cup or another bowl, whisk together eggs, milk and hot sauce; season with salt and pepper, to taste; set aside.
  4. Heat olive oil in a large skillet over medium high heat. Add Italian sausage and cook until browned, about 3-5 minutes, making sure to crumble the sausage as it cooks; drain excess fat. Stir in bell peppers and potatoes until tender, about 3-4 minutes.
  5. Remove from heat. Stir in 1/2 cup cheddar cheese until well combined.
  6. Place sausage mixture evenly into the baking dish. Pour egg mixture evenly over the top and sprinkle with remaining 1/2 cup cheese.*
  7. Place into oven and bake for 35-40 minutes, or until the eggs are firm.
  8. Serve immediately, garnished with parsley, if desired.

Notes

  • Prepare the casserole up to 24 hours ahead by covering and refrigerating before baking.
  • Before reheating, let the casserole sit at room temperature for about an hour for even warming.